Sustainable finance considers environmental, social, and governance (ESG) criteria in investment choices. Adequate financial support directed toward sustainable objectives can significantly boost sustainable initiatives and support a shift toward a sustainable society. New technologies and developments, such as Big Data (BD) analysis, Artificial Intelligence (AI), Machine Learning (ML), Biometric Identification (BI), Blockchain (BC) technology, the Internet of Things (IoT), Cryptocurrency (CR), and Cloud-Based Services (CBS), have enhanced financial technology (fintech) industry growth. Fintech is crucial to advancing sustainability and societal transformation in a dynamic digital environment. This can enable institutions to adopt a sustainable approach by mitigating adverse environmental effects and providing sustainable investment options. It can also help financial organizations improve the accuracy of green process data, reduce costs, and increase ESG efficiency. On the other hand, the intersection between fintech and sustainability presents opportunities and risks, necessitating comprehensive re-evaluation and notable considerations. Hence, it is imperative, in general, and in emerging markets in particular, to develop and regulate novel and opportune frameworks and policies to effectively tackle these issues and capitalize on the potential of fintech. Enhanced governance and establishing regulatory frameworks in emerging markets are essential for mitigating the risks linked to fintech while maximizing its advantages over time.